(1) An order or award of the Tribunal shall be binding on—
(a) all parties to the dispute who appear or are represented before the Tribunal;
(b) in the case of an employer, any successor to, or assignee of the business of the employer who is a party bound by such order or award, including any company that has acquired or taken over the business of such a party;
(c) any trade union on whom such order or award is at any time declared by the Tribunal to be binding as well as on its successors; and
(d) all workers whom the dispute concerns and to whom such order or award refers.
(2) The Tribunal may, during the course of any dispute pending before it, direct that any successors to, or any assignees of the employer who are parties to the dispute shall be joined or substituted as parties to the dispute and any order or award of the Tribunal in such a dispute shall, except to the extent that it is otherwise expressed in such order or award, be binding on the successors or assignees of that employer.
(3) For the purpose of this section, a question whether a person is the successor to or an assignee of another, shall be determined by the Tribunal from all the circumstances in accordance with the principles of good industrial relations practice and such determination shall be binding on the persons referred to in subsection (1).